A mother today demanded an investigation into pollution levels on a busy road after her nine-year-old daughter died from an asthma attack.
Ella Kissi-Debrah, who lived yards from the South Circular Road at Hither Green in south London, suffered a fatal attack in February 2013.
Mum Rosamund Kissi-Debra has asked a leading human rights lawyer to press for a new inquest into Ella's death.
She told BBC Radio 4 Today her daughter began to suffer a series of chronic attacks three years before she died.
There were absolutely horrendous attacks. We all know in London the pollution levels are quite high. That doesn't help. How much that contributed has yet to be established. What Ella wanted was answers. She wanted to know why she had this illness, why it was so severe and why a lot of the medicines were not working.
The outcome of a new inquest could lead to the government being sued for a breach of human rights laws.
Lawyer Jocelyn Cockburn claimed the authorities failed to investigate links between Ella's death and pollution.
What we're trying to do at the moment is to get a proper, wider investigation looking at pollution and whether it contributed to the death of Ella.